Sources say Mueller has long had sufficient evidence to make a case, but strategic issues could dictate the timing.

REUTERS

Special counsel Robert Mueller is assembling a case for criminal charges against Russians who carried out the hacking and leaking of private information designed to hurt Democrats in the 2016 election.

Much like the indictment Mueller filed last month charging a different group of Russians in a social media trolling and illegal-ad-buying scheme, the possible new charges are expected to rely heavily on secret intelligence gathered by the CIA, the FBI, the National Security Agency (NSA) and the Department of Homeland Security (DHS), multiple current and former government officials familiar with the matter tell NBC News.

Mueller's consideration of charges accusing Russians in the hacking case has not been reported previously. Sources say he has long had sufficient evidence to make a case, but strategic issues could dictate the timing. Potential charges include violations of statutes on conspiracy, election law as well as the Computer Fraud and Abuse Act. One U.S. official briefed on the matter said the charges are not imminent, but other knowledgeable sources said they are expected in the next few weeks or months.

"It is unlikely that the United States would be able to extradite alleged Russian hackers or their paymasters, but an indictment would 'send a signal' both to Russia and to any Americans who may have participated," a government official said.

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